Files
ghostty/src/apprt/embedded.zig
Mitchell Hashimoto 04d5efc8eb config: working-directory expands ~/ prefix
Fixes #11336

Introduce a proper WorkingDirectory tagged union type with home, inherit,
and path variants. The field is now an optional (?WorkingDirectory) where
null represents "use platform default" which is resolved during Config.finalize
to .inherit (CLI) or .home (desktop launcher).
2026-03-10 14:33:40 -07:00

2232 lines
72 KiB
Zig

//! Application runtime for the embedded version of Ghostty. The embedded
//! version is when Ghostty is embedded within a parent host application,
//! rather than owning the application lifecycle itself. This is used for
//! example for the macOS build of Ghostty so that we can use a native
//! Swift+XCode-based application.
const std = @import("std");
const builtin = @import("builtin");
const assert = @import("../quirks.zig").inlineAssert;
const Allocator = std.mem.Allocator;
const objc = @import("objc");
const apprt = @import("../apprt.zig");
const font = @import("../font/main.zig");
const input = @import("../input.zig");
const internal_os = @import("../os/main.zig");
const renderer = @import("../renderer.zig");
const terminal = @import("../terminal/main.zig");
const CoreApp = @import("../App.zig");
const CoreInspector = @import("../inspector/main.zig").Inspector;
const CoreSurface = @import("../Surface.zig");
const configpkg = @import("../config.zig");
const Config = configpkg.Config;
const log = std.log.scoped(.embedded_window);
pub const resourcesDir = internal_os.resourcesDir;
pub const App = struct {
/// Because we only expect the embedding API to be used in embedded
/// environments, the options are extern so that we can expose it
/// directly to a C callconv and not pay for any translation costs.
///
/// C type: ghostty_runtime_config_s
pub const Options = extern struct {
/// These are just aliases to make the function signatures below
/// more obvious what values will be sent.
const AppUD = ?*anyopaque;
const SurfaceUD = ?*anyopaque;
/// Userdata that is passed to all the callbacks.
userdata: AppUD = null,
/// True if the selection clipboard is supported.
supports_selection_clipboard: bool = false,
/// Callback called to wakeup the event loop. This should trigger
/// a full tick of the app loop.
wakeup: *const fn (AppUD) callconv(.c) void,
/// Callback called to handle an action.
action: *const fn (*App, apprt.Target.C, apprt.Action.C) callconv(.c) bool,
/// Read the clipboard value. Returns true if the clipboard request
/// was started and complete_clipboard_request may be called with the
/// given state pointer. Returns false if the clipboard request couldn't
/// be started (such as when no text is available for a paste request).
read_clipboard: *const fn (SurfaceUD, c_int, *apprt.ClipboardRequest) callconv(.c) bool,
/// This may be called after a read clipboard call to request
/// confirmation that the clipboard value is safe to read. The embedder
/// must call complete_clipboard_request with the given request.
confirm_read_clipboard: *const fn (
SurfaceUD,
[*:0]const u8,
*apprt.ClipboardRequest,
apprt.ClipboardRequestType,
) callconv(.c) void,
/// Write the clipboard value.
write_clipboard: *const fn (
SurfaceUD,
c_int,
[*]const CAPI.ClipboardContent,
usize,
bool,
) callconv(.c) void,
/// Close the current surface given by this function.
close_surface: ?*const fn (SurfaceUD, bool) callconv(.c) void = null,
};
/// This is the key event sent for ghostty_surface_key and
/// ghostty_app_key.
pub const KeyEvent = struct {
action: input.Action,
mods: input.Mods,
consumed_mods: input.Mods,
keycode: u32,
text: ?[:0]const u8,
unshifted_codepoint: u32,
composing: bool,
/// Convert a libghostty key event into a core key event.
fn core(self: KeyEvent) ?input.KeyEvent {
const text: []const u8 = if (self.text) |v| v else "";
const unshifted_codepoint: u21 = std.math.cast(
u21,
self.unshifted_codepoint,
) orelse 0;
// We want to get the physical unmapped key to process keybinds.
const physical_key = keycode: for (input.keycodes.entries) |entry| {
if (entry.native == self.keycode) break :keycode entry.key;
} else .unidentified;
// Build our final key event
return .{
.action = self.action,
.key = physical_key,
.mods = self.mods,
.consumed_mods = self.consumed_mods,
.composing = self.composing,
.utf8 = text,
.unshifted_codepoint = unshifted_codepoint,
};
}
};
core_app: *CoreApp,
opts: Options,
keymap: input.Keymap,
/// The configuration for the app. This is owned by this structure.
config: Config,
pub fn init(
self: *App,
core_app: *CoreApp,
config: *const Config,
opts: Options,
) !void {
// We have to clone the config.
const alloc = core_app.alloc;
var config_clone = try config.clone(alloc);
errdefer config_clone.deinit();
var keymap = try input.Keymap.init();
errdefer keymap.deinit();
self.* = .{
.core_app = core_app,
.config = config_clone,
.opts = opts,
.keymap = keymap,
};
}
pub fn terminate(self: *App) void {
self.keymap.deinit();
self.config.deinit();
}
/// Returns true if there are any global keybinds in the configuration.
pub fn hasGlobalKeybinds(self: *const App) bool {
var it = self.config.keybind.set.bindings.iterator();
while (it.next()) |entry| {
switch (entry.value_ptr.*) {
.leader => {},
inline .leaf, .leaf_chained => |leaf| if (leaf.flags.global) return true,
}
}
return false;
}
/// The target of a key event. This is used to determine some subtly
/// different behavior between app and surface key events.
pub const KeyTarget = union(enum) {
app,
surface: *Surface,
};
/// See CoreApp.focusEvent
pub fn focusEvent(self: *App, focused: bool) void {
self.core_app.focusEvent(focused);
}
/// See CoreApp.keyEvent.
pub fn keyEvent(
self: *App,
target: KeyTarget,
event: KeyEvent,
) !bool {
// Convert our C key event into a Zig one.
const input_event: input.KeyEvent = event.core() orelse
return false;
// Invoke the core Ghostty logic to handle this input.
const effect: CoreSurface.InputEffect = switch (target) {
.app => if (self.core_app.keyEvent(
self,
input_event,
)) .consumed else .ignored,
.surface => |surface| try surface.core_surface.keyCallback(
input_event,
),
};
return switch (effect) {
.closed => true,
.ignored => false,
.consumed => true,
};
}
/// This should be called whenever the keyboard layout was changed.
pub fn reloadKeymap(self: *App) !void {
// Reload the keymap
try self.keymap.reload();
}
/// Loads the keyboard layout.
///
/// Kind of expensive so this should be avoided if possible. When I say
/// "kind of expensive" I mean that its not something you probably want
/// to run on every keypress.
pub fn keyboardLayout(self: *const App) input.KeyboardLayout {
// We only support keyboard layout detection on macOS.
if (comptime builtin.os.tag != .macos) return .unknown;
// Any layout larger than this is not something we can handle.
var buf: [256]u8 = undefined;
const id = self.keymap.sourceId(&buf) catch |err| {
comptime assert(@TypeOf(err) == error{OutOfMemory});
return .unknown;
};
return input.KeyboardLayout.mapAppleId(id) orelse .unknown;
}
pub fn wakeup(self: *const App) void {
self.opts.wakeup(self.opts.userdata);
}
pub fn wait(self: *const App) !void {
_ = self;
}
/// Create a new surface for the app.
fn newSurface(self: *App, opts: Surface.Options) !*Surface {
// Grab a surface allocation because we're going to need it.
var surface = try self.core_app.alloc.create(Surface);
errdefer self.core_app.alloc.destroy(surface);
// Create the surface
try surface.init(self, opts);
errdefer surface.deinit();
return surface;
}
/// Close the given surface.
pub fn closeSurface(self: *App, surface: *Surface) void {
surface.deinit();
self.core_app.alloc.destroy(surface);
}
pub fn redrawInspector(self: *App, surface: *Surface) void {
_ = self;
surface.queueInspectorRender();
}
/// Perform a given action. Returns `true` if the action was able to be
/// performed, `false` otherwise.
pub fn performAction(
self: *App,
target: apprt.Target,
comptime action: apprt.Action.Key,
value: apprt.Action.Value(action),
) !bool {
// Special case certain actions before they are sent to the
// embedded apprt.
self.performPreAction(target, action, value);
log.debug("dispatching action target={t} action={} value={any}", .{
target,
action,
value,
});
return self.opts.action(
self,
target.cval(),
@unionInit(apprt.Action, @tagName(action), value).cval(),
);
}
fn performPreAction(
self: *App,
target: apprt.Target,
comptime action: apprt.Action.Key,
value: apprt.Action.Value(action),
) void {
// Special case certain actions before they are sent to the embedder
switch (action) {
.set_title => switch (target) {
.app => {},
.surface => |surface| {
// Dupe the title so that we can store it. If we get an allocation
// error we just ignore it, since this only breaks a few minor things.
const alloc = self.core_app.alloc;
if (surface.rt_surface.title) |v| alloc.free(v);
surface.rt_surface.title = alloc.dupeZ(u8, value.title) catch null;
},
},
.config_change => switch (target) {
.surface => {},
// For app updates, we update our core config. We need to
// clone it because the caller owns the param.
.app => if (value.config.clone(self.core_app.alloc)) |config| {
self.config.deinit();
self.config = config;
} else |err| {
log.err("error updating app config err={}", .{err});
},
},
else => {},
}
}
/// Send the given IPC to a running Ghostty. Returns `true` if the action was
/// able to be performed, `false` otherwise.
///
/// Note that this is a static function. Since this is called from a CLI app (or
/// some other process that is not Ghostty) there is no full-featured apprt App
/// to use.
pub fn performIpc(
_: Allocator,
_: apprt.ipc.Target,
comptime action: apprt.ipc.Action.Key,
_: apprt.ipc.Action.Value(action),
) (Allocator.Error || std.posix.WriteError || apprt.ipc.Errors)!bool {
switch (action) {
.new_window => return false,
}
}
};
/// Platform-specific configuration for libghostty.
pub const Platform = union(PlatformTag) {
macos: MacOS,
ios: IOS,
// If our build target for libghostty is not darwin then we do
// not include macos support at all.
pub const MacOS = if (builtin.target.os.tag.isDarwin()) struct {
/// The view to render the surface on.
nsview: objc.Object,
} else void;
pub const IOS = if (builtin.target.os.tag.isDarwin()) struct {
/// The view to render the surface on.
uiview: objc.Object,
} else void;
// The C ABI compatible version of this union. The tag is expected
// to be stored elsewhere.
pub const C = extern union {
macos: extern struct {
nsview: ?*anyopaque,
},
ios: extern struct {
uiview: ?*anyopaque,
},
};
/// Initialize a Platform a tag and configuration from the C ABI.
pub fn init(tag_int: c_int, c_platform: C) !Platform {
const tag = try std.meta.intToEnum(PlatformTag, tag_int);
return switch (tag) {
.macos => if (MacOS != void) macos: {
const config = c_platform.macos;
const nsview = objc.Object.fromId(config.nsview orelse
break :macos error.NSViewMustBeSet);
break :macos .{ .macos = .{ .nsview = nsview } };
} else error.UnsupportedPlatform,
.ios => if (IOS != void) ios: {
const config = c_platform.ios;
const uiview = objc.Object.fromId(config.uiview orelse
break :ios error.UIViewMustBeSet);
break :ios .{ .ios = .{ .uiview = uiview } };
} else error.UnsupportedPlatform,
};
}
};
pub const PlatformTag = enum(c_int) {
// "0" is reserved for invalid so we can detect unset values
// from the C API.
macos = 1,
ios = 2,
};
pub const EnvVar = extern struct {
/// The name of the environment variable.
key: [*:0]const u8,
/// The value of the environment variable.
value: [*:0]const u8,
};
pub const Surface = struct {
app: *App,
platform: Platform,
userdata: ?*anyopaque = null,
core_surface: CoreSurface,
content_scale: apprt.ContentScale,
size: apprt.SurfaceSize,
cursor_pos: apprt.CursorPos,
inspector: ?*Inspector = null,
/// The current title of the surface. The embedded apprt saves this so
/// that getTitle works without the implementer needing to save it.
title: ?[:0]const u8 = null,
/// Surface initialization options.
pub const Options = extern struct {
/// The platform that this surface is being initialized for and
/// the associated platform-specific configuration.
platform_tag: c_int = 0,
platform: Platform.C = undefined,
/// Userdata passed to some of the callbacks.
userdata: ?*anyopaque = null,
/// The scale factor of the screen.
scale_factor: f64 = 1,
/// The font size to inherit. If 0, default font size will be used.
font_size: f32 = 0,
/// The working directory to load into.
working_directory: ?[*:0]const u8 = null,
/// The command to run in the new surface. If this is set then
/// the "wait-after-command" option is also automatically set to true,
/// since this is used for scripting.
///
/// This command always run in a shell (e.g. via `/bin/sh -c`),
/// despite Ghostty allowing directly executed commands via config.
/// This is a legacy thing and we should probably change it in the
/// future once we have a concrete use case.
command: ?[*:0]const u8 = null,
/// Extra environment variables to set for the surface.
env_vars: ?[*]EnvVar = null,
env_var_count: usize = 0,
/// Input to send to the command after it is started.
initial_input: ?[*:0]const u8 = null,
/// Wait after the command exits
wait_after_command: bool = false,
/// Context for the new surface
context: apprt.surface.NewSurfaceContext = .window,
};
pub fn init(self: *Surface, app: *App, opts: Options) !void {
self.* = .{
.app = app,
.platform = try .init(opts.platform_tag, opts.platform),
.userdata = opts.userdata,
.core_surface = undefined,
.content_scale = .{
.x = @floatCast(opts.scale_factor),
.y = @floatCast(opts.scale_factor),
},
.size = .{ .width = 800, .height = 600 },
.cursor_pos = .{ .x = -1, .y = -1 },
};
// Add ourselves to the list of surfaces on the app.
try app.core_app.addSurface(self);
errdefer app.core_app.deleteSurface(self);
// Shallow copy the config so that we can modify it.
var config = try apprt.surface.newConfig(app.core_app, &app.config, opts.context);
defer config.deinit();
// If we have a working directory from the options then we set it.
if (opts.working_directory) |c_wd| {
const wd = std.mem.sliceTo(c_wd, 0);
if (wd.len > 0) wd: {
var dir = std.fs.openDirAbsolute(wd, .{}) catch |err| {
log.warn(
"error opening requested working directory dir={s} err={}",
.{ wd, err },
);
break :wd;
};
defer dir.close();
const stat = dir.stat() catch |err| {
log.warn(
"failed to stat requested working directory dir={s} err={}",
.{ wd, err },
);
break :wd;
};
if (stat.kind != .directory) {
log.warn(
"requested working directory is not a directory dir={s}",
.{wd},
);
break :wd;
}
var wd_val: configpkg.WorkingDirectory = .{ .path = wd };
if (wd_val.finalize(config.arenaAlloc())) |_| {
config.@"working-directory" = wd_val;
} else |err| {
log.warn(
"error finalizing working directory config dir={s} err={}",
.{ wd_val.path, err },
);
}
}
}
// If we have a command from the options then we set it.
if (opts.command) |c_command| {
const cmd = std.mem.sliceTo(c_command, 0);
if (cmd.len > 0) {
config.command = .{ .shell = cmd };
config.@"wait-after-command" = true;
}
}
// Apply any environment variables that were requested.
if (opts.env_var_count > 0) {
const alloc = config.arenaAlloc();
for (opts.env_vars.?[0..opts.env_var_count]) |env_var| {
const key = std.mem.sliceTo(env_var.key, 0);
const value = std.mem.sliceTo(env_var.value, 0);
try config.env.map.put(
alloc,
try alloc.dupeZ(u8, key),
try alloc.dupeZ(u8, value),
);
}
}
// If we have an initial input then we set it.
if (opts.initial_input) |c_input| {
const alloc = config.arenaAlloc();
// We need to escape the string because the "raw" field
// expects a Zig string.
var buf: std.Io.Writer.Allocating = .init(alloc);
defer buf.deinit();
try std.zig.stringEscape(
std.mem.sliceTo(c_input, 0),
&buf.writer,
);
config.input.list.clearRetainingCapacity();
try config.input.list.append(
alloc,
.{ .raw = try buf.toOwnedSliceSentinel(0) },
);
}
// Wait after command
if (opts.wait_after_command) {
config.@"wait-after-command" = true;
}
// Initialize our surface right away. We're given a view that is
// ready to use.
try self.core_surface.init(
app.core_app.alloc,
&config,
app.core_app,
app,
self,
);
errdefer self.core_surface.deinit();
// If our options requested a specific font-size, set that.
if (opts.font_size != 0) {
var font_size = self.core_surface.font_size;
font_size.points = opts.font_size;
try self.core_surface.setFontSize(font_size);
}
}
pub fn deinit(self: *Surface) void {
// Shut down our inspector
self.freeInspector();
// Free our title
if (self.title) |v| self.app.core_app.alloc.free(v);
// Remove ourselves from the list of known surfaces in the app.
self.app.core_app.deleteSurface(self);
// Clean up our core surface so that all the rendering and IO stop.
self.core_surface.deinit();
}
/// Initialize the inspector instance. A surface can only have one
/// inspector at any given time, so this will return the previous inspector
/// if it was already initialized.
pub fn initInspector(self: *Surface) !*Inspector {
if (self.inspector) |v| return v;
const alloc = self.app.core_app.alloc;
const inspector = try alloc.create(Inspector);
errdefer alloc.destroy(inspector);
inspector.* = try .init(self);
self.inspector = inspector;
return inspector;
}
pub fn freeInspector(self: *Surface) void {
if (self.inspector) |v| {
v.deinit();
self.app.core_app.alloc.destroy(v);
self.inspector = null;
}
}
pub fn core(self: *Surface) *CoreSurface {
return &self.core_surface;
}
pub fn rtApp(self: *const Surface) *App {
return self.app;
}
pub fn close(self: *const Surface, process_alive: bool) void {
const func = self.app.opts.close_surface orelse {
log.info("runtime embedder does not support closing a surface", .{});
return;
};
func(self.userdata, process_alive);
}
pub fn getContentScale(self: *const Surface) !apprt.ContentScale {
return self.content_scale;
}
pub fn getSize(self: *const Surface) !apprt.SurfaceSize {
return self.size;
}
pub fn getTitle(self: *Surface) ?[:0]const u8 {
return self.title;
}
pub fn supportsClipboard(
self: *const Surface,
clipboard_type: apprt.Clipboard,
) bool {
return switch (clipboard_type) {
.standard => true,
.selection, .primary => self.app.opts.supports_selection_clipboard,
};
}
pub fn clipboardRequest(
self: *Surface,
clipboard_type: apprt.Clipboard,
state: apprt.ClipboardRequest,
) !bool {
// We need to allocate to get a pointer to store our clipboard request
// so that it is stable until the read_clipboard callback and call
// complete_clipboard_request. This sucks but clipboard requests aren't
// high throughput so it's probably fine.
const alloc = self.app.core_app.alloc;
const state_ptr = try alloc.create(apprt.ClipboardRequest);
errdefer alloc.destroy(state_ptr);
state_ptr.* = state;
const started = self.app.opts.read_clipboard(
self.userdata,
@intCast(@intFromEnum(clipboard_type)),
state_ptr,
);
if (!started) {
alloc.destroy(state_ptr);
return false;
}
return true;
}
fn completeClipboardRequest(
self: *Surface,
str: [:0]const u8,
state: *apprt.ClipboardRequest,
confirmed: bool,
) void {
const alloc = self.app.core_app.alloc;
// Attempt to complete the request, but we may request
// confirmation.
self.core_surface.completeClipboardRequest(
state.*,
str,
confirmed,
) catch |err| switch (err) {
error.UnsafePaste,
error.UnauthorizedPaste,
=> {
self.app.opts.confirm_read_clipboard(
self.userdata,
str.ptr,
state,
state.*,
);
return;
},
else => log.err("error completing clipboard request err={}", .{err}),
};
// We don't defer this because the clipboard confirmation route
// preserves the clipboard request.
alloc.destroy(state);
}
pub fn setClipboard(
self: *const Surface,
clipboard_type: apprt.Clipboard,
contents: []const apprt.ClipboardContent,
confirm: bool,
) !void {
const alloc = self.app.core_app.alloc;
const array = try alloc.alloc(CAPI.ClipboardContent, contents.len);
defer alloc.free(array);
for (contents, 0..) |content, i| {
array[i] = .{
.mime = content.mime,
.data = content.data,
};
}
self.app.opts.write_clipboard(
self.userdata,
@intCast(@intFromEnum(clipboard_type)),
array.ptr,
array.len,
confirm,
);
}
pub fn getCursorPos(self: *const Surface) !apprt.CursorPos {
return self.cursor_pos;
}
pub fn refresh(self: *Surface) void {
self.core_surface.refreshCallback() catch |err| {
log.err("error in refresh callback err={}", .{err});
return;
};
}
pub fn draw(self: *Surface) void {
self.core_surface.draw() catch |err| {
log.err("error in draw err={}", .{err});
return;
};
}
pub fn updateContentScale(self: *Surface, x: f64, y: f64) void {
// We are an embedded API so the caller can send us all sorts of
// garbage. We want to make sure that the float values are valid
// and we don't want to support fractional scaling below 1.
const x_scaled = @max(1, if (std.math.isNan(x)) 1 else x);
const y_scaled = @max(1, if (std.math.isNan(y)) 1 else y);
self.content_scale = .{
.x = @floatCast(x_scaled),
.y = @floatCast(y_scaled),
};
self.core_surface.contentScaleCallback(self.content_scale) catch |err| {
log.err("error in content scale callback err={}", .{err});
return;
};
}
pub fn updateSize(self: *Surface, width: u32, height: u32) void {
// Runtimes sometimes generate superfluous resize events even
// if the size did not actually change (SwiftUI). We check
// that the size actually changed from what we last recorded
// since resizes are expensive.
if (self.size.width == width and self.size.height == height) return;
self.size = .{
.width = width,
.height = height,
};
// Call the primary callback.
self.core_surface.sizeCallback(self.size) catch |err| {
log.err("error in size callback err={}", .{err});
return;
};
}
pub fn colorSchemeCallback(self: *Surface, scheme: apprt.ColorScheme) void {
self.core_surface.colorSchemeCallback(scheme) catch |err| {
log.err("error setting color scheme err={}", .{err});
return;
};
}
pub fn mouseButtonCallback(
self: *Surface,
action: input.MouseButtonState,
button: input.MouseButton,
mods: input.Mods,
) bool {
return self.core_surface.mouseButtonCallback(action, button, mods) catch |err| {
log.err("error in mouse button callback err={}", .{err});
return false;
};
}
pub fn mousePressureCallback(
self: *Surface,
stage: input.MousePressureStage,
pressure: f64,
) void {
self.core_surface.mousePressureCallback(stage, pressure) catch |err| {
log.err("error in mouse pressure callback err={}", .{err});
return;
};
}
pub fn scrollCallback(
self: *Surface,
xoff: f64,
yoff: f64,
mods: input.ScrollMods,
) void {
self.core_surface.scrollCallback(xoff, yoff, mods) catch |err| {
log.err("error in scroll callback err={}", .{err});
return;
};
}
pub fn cursorPosCallback(
self: *Surface,
x: f64,
y: f64,
mods: input.Mods,
) void {
// Convert our unscaled x/y to scaled.
const pos = self.cursorPosToPixels(.{
.x = @floatCast(x),
.y = @floatCast(y),
}) catch |err| {
log.err(
"error converting cursor pos to scaled pixels in cursor pos callback err={}",
.{err},
);
return;
};
// There are cases where the platform reports a mouse motion event
// without the cursor actually moving. For example, on macOS, updating
// the window title can trigger a phantom mouse-move event at the same
// coordinates. This can cause the mouse to incorrectly unhide when
// mouse-hide-while-typing is enabled (commonly seen with TUI apps
// like Zellij that frequently update the title). To prevent incorrect
// behavior, we only continue with callback logic if the cursor has
// actually moved.
if (@abs(self.cursor_pos.x - pos.x) < 1 and
@abs(self.cursor_pos.y - pos.y) < 1) return;
self.cursor_pos = pos;
self.core_surface.cursorPosCallback(self.cursor_pos, mods) catch |err| {
log.err("error in cursor pos callback err={}", .{err});
return;
};
}
pub fn preeditCallback(self: *Surface, preedit_: ?[]const u8) void {
_ = self.core_surface.preeditCallback(preedit_) catch |err| {
log.err("error in preedit callback err={}", .{err});
return;
};
}
pub fn textCallback(self: *Surface, text: []const u8) void {
_ = self.core_surface.textCallback(text) catch |err| {
log.err("error in key callback err={}", .{err});
return;
};
}
pub fn focusCallback(self: *Surface, focused: bool) void {
self.core_surface.focusCallback(focused) catch |err| {
log.err("error in focus callback err={}", .{err});
return;
};
}
pub fn occlusionCallback(self: *Surface, visible: bool) void {
self.core_surface.occlusionCallback(visible) catch |err| {
log.err("error in occlusion callback err={}", .{err});
return;
};
}
fn queueInspectorRender(self: *Surface) void {
_ = self.app.performAction(
.{ .surface = &self.core_surface },
.render_inspector,
{},
) catch |err| {
log.err("error rendering the inspector err={}", .{err});
return;
};
}
pub fn newSurfaceOptions(self: *const Surface, context: apprt.surface.NewSurfaceContext) apprt.Surface.Options {
const font_size: f32 = font_size: {
if (!self.app.config.@"window-inherit-font-size") break :font_size 0;
break :font_size self.core_surface.font_size.points;
};
const working_directory: ?[*:0]const u8 = wd: {
if (!apprt.surface.shouldInheritWorkingDirectory(context, &self.app.config)) break :wd null;
const cwd = self.core_surface.pwd(self.app.core_app.alloc) catch null orelse break :wd null;
defer self.app.core_app.alloc.free(cwd);
break :wd self.app.core_app.alloc.dupeZ(u8, cwd) catch null;
};
return .{
.font_size = font_size,
.working_directory = working_directory,
.context = context,
};
}
pub fn defaultTermioEnv(self: *const Surface) !std.process.EnvMap {
const alloc = self.app.core_app.alloc;
var env = try internal_os.getEnvMap(alloc);
errdefer env.deinit();
if (comptime builtin.target.os.tag.isDarwin()) {
if (env.get("__XCODE_BUILT_PRODUCTS_DIR_PATHS") != null) {
env.remove("__XCODE_BUILT_PRODUCTS_DIR_PATHS");
env.remove("__XPC_DYLD_LIBRARY_PATH");
env.remove("DYLD_FRAMEWORK_PATH");
env.remove("DYLD_INSERT_LIBRARIES");
env.remove("DYLD_LIBRARY_PATH");
env.remove("LD_LIBRARY_PATH");
env.remove("SECURITYSESSIONID");
env.remove("XPC_SERVICE_NAME");
}
// Remove this so that running `ghostty` within Ghostty works.
env.remove("GHOSTTY_MAC_LAUNCH_SOURCE");
// If we were launched from the desktop then we want to
// remove the LANGUAGE env var so that we don't inherit
// our translation settings for Ghostty. If we aren't from
// the desktop then we didn't set our LANGUAGE var so we
// don't need to remove it.
if (internal_os.launchedFromDesktop()) env.remove("LANGUAGE");
}
return env;
}
/// The cursor position from the host directly is in screen coordinates but
/// all our interface works in pixels.
fn cursorPosToPixels(self: *const Surface, pos: apprt.CursorPos) !apprt.CursorPos {
const scale = try self.getContentScale();
return .{ .x = pos.x * scale.x, .y = pos.y * scale.y };
}
};
/// Inspector is the state required for the terminal inspector. A terminal
/// inspector is 1:1 with a Surface.
pub const Inspector = struct {
const cimgui = @import("dcimgui");
surface: *Surface,
ig_ctx: *cimgui.c.ImGuiContext,
backend: ?Backend = null,
content_scale: f64 = 1,
/// Our previous instant used to calculate delta time for animations.
instant: ?std.time.Instant = null,
const Backend = enum {
metal,
pub fn deinit(self: Backend) void {
switch (self) {
.metal => if (builtin.target.os.tag.isDarwin()) cimgui.ImGui_ImplMetal_Shutdown(),
}
}
};
pub fn init(surface: *Surface) !Inspector {
const ig_ctx = cimgui.c.ImGui_CreateContext(null) orelse return error.OutOfMemory;
errdefer cimgui.c.ImGui_DestroyContext(ig_ctx);
cimgui.c.ImGui_SetCurrentContext(ig_ctx);
const io: *cimgui.c.ImGuiIO = cimgui.c.ImGui_GetIO();
io.BackendPlatformName = "ghostty_embedded";
// Setup our core inspector
CoreInspector.setup();
surface.core_surface.activateInspector() catch |err| {
log.err("failed to activate inspector err={}", .{err});
};
return .{
.surface = surface,
.ig_ctx = ig_ctx,
};
}
pub fn deinit(self: *Inspector) void {
self.surface.core_surface.deactivateInspector();
cimgui.c.ImGui_SetCurrentContext(self.ig_ctx);
if (self.backend) |v| v.deinit();
cimgui.c.ImGui_DestroyContext(self.ig_ctx);
}
/// Queue a render for the next frame.
pub fn queueRender(self: *Inspector) void {
self.surface.queueInspectorRender();
}
/// Initialize the inspector for a metal backend.
pub fn initMetal(self: *Inspector, device: objc.Object) bool {
defer device.msgSend(void, objc.sel("release"), .{});
cimgui.c.ImGui_SetCurrentContext(self.ig_ctx);
if (self.backend) |v| {
v.deinit();
self.backend = null;
}
if (!cimgui.ImGui_ImplMetal_Init(device.value)) {
log.warn("failed to initialize metal backend", .{});
return false;
}
self.backend = .metal;
log.debug("initialized metal backend", .{});
return true;
}
pub fn renderMetal(
self: *Inspector,
command_buffer: objc.Object,
desc: objc.Object,
) !void {
defer {
command_buffer.msgSend(void, objc.sel("release"), .{});
desc.msgSend(void, objc.sel("release"), .{});
}
assert(self.backend == .metal);
//log.debug("render", .{});
// Setup our imgui frame. We need to render multiple frames to ensure
// ImGui completes all its state processing. I don't know how to fix
// this.
for (0..2) |_| {
cimgui.ImGui_ImplMetal_NewFrame(desc.value);
try self.newFrame();
cimgui.c.ImGui_NewFrame();
// Build our UI
render: {
const surface = &self.surface.core_surface;
const inspector = surface.inspector orelse break :render;
inspector.render(surface);
}
// Render
cimgui.c.ImGui_Render();
}
// MTLRenderCommandEncoder
const encoder = command_buffer.msgSend(
objc.Object,
objc.sel("renderCommandEncoderWithDescriptor:"),
.{desc.value},
);
defer encoder.msgSend(void, objc.sel("endEncoding"), .{});
cimgui.ImGui_ImplMetal_RenderDrawData(
cimgui.c.ImGui_GetDrawData(),
command_buffer.value,
encoder.value,
);
}
pub fn updateContentScale(self: *Inspector, x: f64, y: f64) void {
_ = y;
cimgui.c.ImGui_SetCurrentContext(self.ig_ctx);
// Cache our scale because we use it for cursor position calculations.
self.content_scale = x;
// Setup a new style and scale it appropriately. We must use the
// ImGuiStyle constructor to get proper default values (e.g.,
// CurveTessellationTol) rather than zero-initialized values.
var style: cimgui.c.ImGuiStyle = undefined;
cimgui.ext.ImGuiStyle_ImGuiStyle(&style);
cimgui.c.ImGuiStyle_ScaleAllSizes(&style, @floatCast(x));
const active_style = cimgui.c.ImGui_GetStyle();
active_style.* = style;
}
pub fn updateSize(self: *Inspector, width: u32, height: u32) void {
cimgui.c.ImGui_SetCurrentContext(self.ig_ctx);
const io: *cimgui.c.ImGuiIO = cimgui.c.ImGui_GetIO();
io.DisplaySize = .{ .x = @floatFromInt(width), .y = @floatFromInt(height) };
}
pub fn mouseButtonCallback(
self: *Inspector,
action: input.MouseButtonState,
button: input.MouseButton,
mods: input.Mods,
) void {
_ = mods;
self.queueRender();
cimgui.c.ImGui_SetCurrentContext(self.ig_ctx);
const io: *cimgui.c.ImGuiIO = cimgui.c.ImGui_GetIO();
const imgui_button = switch (button) {
.left => cimgui.c.ImGuiMouseButton_Left,
.middle => cimgui.c.ImGuiMouseButton_Middle,
.right => cimgui.c.ImGuiMouseButton_Right,
else => return, // unsupported
};
cimgui.c.ImGuiIO_AddMouseButtonEvent(io, imgui_button, action == .press);
}
pub fn scrollCallback(
self: *Inspector,
xoff: f64,
yoff: f64,
mods: input.ScrollMods,
) void {
self.queueRender();
cimgui.c.ImGui_SetCurrentContext(self.ig_ctx);
const io: *cimgui.c.ImGuiIO = cimgui.c.ImGui_GetIO();
// For precision scrolling (trackpads), the values are in pixels which
// scroll way too fast. Scale them down to approximate discrete wheel
// notches. imgui expects 1.0 to scroll ~5 lines of text.
const scale: f64 = if (mods.precision) 0.1 else 1.0;
cimgui.c.ImGuiIO_AddMouseWheelEvent(
io,
@floatCast(xoff * scale),
@floatCast(yoff * scale),
);
}
pub fn cursorPosCallback(self: *Inspector, x: f64, y: f64) void {
self.queueRender();
cimgui.c.ImGui_SetCurrentContext(self.ig_ctx);
const io: *cimgui.c.ImGuiIO = cimgui.c.ImGui_GetIO();
cimgui.c.ImGuiIO_AddMousePosEvent(
io,
@floatCast(x * self.content_scale),
@floatCast(y * self.content_scale),
);
}
pub fn focusCallback(self: *Inspector, focused: bool) void {
self.queueRender();
cimgui.c.ImGui_SetCurrentContext(self.ig_ctx);
const io: *cimgui.c.ImGuiIO = cimgui.c.ImGui_GetIO();
cimgui.c.ImGuiIO_AddFocusEvent(io, focused);
}
pub fn textCallback(self: *Inspector, text: [:0]const u8) void {
self.queueRender();
cimgui.c.ImGui_SetCurrentContext(self.ig_ctx);
const io: *cimgui.c.ImGuiIO = cimgui.c.ImGui_GetIO();
cimgui.c.ImGuiIO_AddInputCharactersUTF8(io, text.ptr);
}
pub fn keyCallback(
self: *Inspector,
action: input.Action,
key: input.Key,
mods: input.Mods,
) !void {
self.queueRender();
cimgui.c.ImGui_SetCurrentContext(self.ig_ctx);
const io: *cimgui.c.ImGuiIO = cimgui.c.ImGui_GetIO();
// Update all our modifiers
cimgui.c.ImGuiIO_AddKeyEvent(io, cimgui.c.ImGuiKey_LeftShift, mods.shift);
cimgui.c.ImGuiIO_AddKeyEvent(io, cimgui.c.ImGuiKey_LeftCtrl, mods.ctrl);
cimgui.c.ImGuiIO_AddKeyEvent(io, cimgui.c.ImGuiKey_LeftAlt, mods.alt);
cimgui.c.ImGuiIO_AddKeyEvent(io, cimgui.c.ImGuiKey_LeftSuper, mods.super);
// Send our keypress
if (key.imguiKey()) |imgui_key| {
cimgui.c.ImGuiIO_AddKeyEvent(
io,
imgui_key,
action == .press or action == .repeat,
);
}
}
fn newFrame(self: *Inspector) !void {
const io: *cimgui.c.ImGuiIO = cimgui.c.ImGui_GetIO();
// Determine our delta time
const now = try std.time.Instant.now();
io.DeltaTime = if (self.instant) |prev| delta: {
const since_ns: f64 = @floatFromInt(now.since(prev));
const ns_per_s: f64 = @floatFromInt(std.time.ns_per_s);
const since_s: f32 = @floatCast(since_ns / ns_per_s);
break :delta @max(0.00001, since_s);
} else (1.0 / 60.0);
self.instant = now;
}
};
// C API
pub const CAPI = struct {
const global = &@import("../global.zig").state;
/// This is the same as Surface.KeyEvent but this is the raw C API version.
const KeyEvent = extern struct {
action: input.Action,
mods: c_int,
consumed_mods: c_int,
keycode: u32,
text: ?[*:0]const u8,
unshifted_codepoint: u32,
composing: bool,
/// Convert to Zig key event.
fn keyEvent(self: KeyEvent) App.KeyEvent {
return .{
.action = self.action,
.mods = @bitCast(@as(
input.Mods.Backing,
@truncate(@as(c_uint, @bitCast(self.mods))),
)),
.consumed_mods = @bitCast(@as(
input.Mods.Backing,
@truncate(@as(c_uint, @bitCast(self.consumed_mods))),
)),
.keycode = self.keycode,
.text = if (self.text) |ptr| std.mem.sliceTo(ptr, 0) else null,
.unshifted_codepoint = self.unshifted_codepoint,
.composing = self.composing,
};
}
};
const SurfaceSize = extern struct {
columns: u16,
rows: u16,
width_px: u32,
height_px: u32,
cell_width_px: u32,
cell_height_px: u32,
};
// ghostty_clipboard_content_s
const ClipboardContent = extern struct {
mime: [*:0]const u8,
data: [*:0]const u8,
};
// ghostty_text_s
const Text = extern struct {
tl_px_x: f64,
tl_px_y: f64,
offset_start: u32,
offset_len: u32,
text: ?[*:0]const u8,
text_len: usize,
pub fn deinit(self: *Text) void {
if (self.text) |ptr| {
global.alloc.free(ptr[0..self.text_len :0]);
}
}
};
// ghostty_point_s
const Point = extern struct {
tag: Tag,
coord_tag: CoordTag,
x: u32,
y: u32,
const Tag = enum(c_int) {
active = 0,
viewport = 1,
screen = 2,
history = 3,
};
const CoordTag = enum(c_int) {
exact = 0,
top_left = 1,
bottom_right = 2,
};
fn pin(
self: Point,
screen: *const terminal.Screen,
) ?terminal.Pin {
// The core point tag.
const tag: terminal.point.Tag = switch (self.tag) {
inline else => |tag| @field(
terminal.point.Tag,
@tagName(tag),
),
};
// Clamp our point to the screen bounds.
const clamped_x = @min(self.x, screen.pages.cols -| 1);
const clamped_y = @min(self.y, screen.pages.rows -| 1);
return switch (self.coord_tag) {
// Exact coordinates require a specific pin.
.exact => exact: {
const pt_x = std.math.cast(
terminal.size.CellCountInt,
clamped_x,
) orelse std.math.maxInt(terminal.size.CellCountInt);
const pt: terminal.Point = switch (tag) {
inline else => |v| @unionInit(
terminal.Point,
@tagName(v),
.{ .x = pt_x, .y = clamped_y },
),
};
break :exact screen.pages.pin(pt) orelse null;
},
.top_left => screen.pages.getTopLeft(tag),
.bottom_right => screen.pages.getBottomRight(tag),
};
}
};
// ghostty_selection_s
const Selection = extern struct {
tl: Point,
br: Point,
rectangle: bool,
fn core(
self: Selection,
screen: *const terminal.Screen,
) ?terminal.Selection {
return .{
.bounds = .{ .untracked = .{
.start = self.tl.pin(screen) orelse return null,
.end = self.br.pin(screen) orelse return null,
} },
.rectangle = self.rectangle,
};
}
};
// Reference the conditional exports based on target platform
// so they're included in the C API.
comptime {
if (builtin.target.os.tag.isDarwin()) {
_ = Darwin;
}
}
/// Create a new app.
export fn ghostty_app_new(
opts: *const apprt.runtime.App.Options,
config: *const Config,
) ?*App {
return app_new_(opts, config) catch |err| {
log.err("error initializing app err={}", .{err});
return null;
};
}
fn app_new_(
opts: *const apprt.runtime.App.Options,
config: *const Config,
) !*App {
const core_app = try CoreApp.create(global.alloc);
errdefer core_app.destroy();
// Create our runtime app
var app = try global.alloc.create(App);
errdefer global.alloc.destroy(app);
try app.init(core_app, config, opts.*);
errdefer app.terminate();
return app;
}
/// Tick the event loop. This should be called whenever the "wakeup"
/// callback is invoked for the runtime.
export fn ghostty_app_tick(v: *App) void {
v.core_app.tick(v) catch |err| {
log.err("error app tick err={}", .{err});
};
}
/// Return the userdata associated with the app.
export fn ghostty_app_userdata(v: *App) ?*anyopaque {
return v.opts.userdata;
}
export fn ghostty_app_free(v: *App) void {
const core_app = v.core_app;
v.terminate();
global.alloc.destroy(v);
core_app.destroy();
}
/// Update the focused state of the app.
export fn ghostty_app_set_focus(
app: *App,
focused: bool,
) void {
app.focusEvent(focused);
}
/// Notify the app of a global keypress capture. This will return
/// true if the key was captured by the app, in which case the caller
/// should not process the key.
export fn ghostty_app_key(
app: *App,
event: KeyEvent,
) bool {
return app.keyEvent(.app, event.keyEvent()) catch |err| {
log.warn("error processing key event err={}", .{err});
return false;
};
}
/// Returns true if the given key event would trigger a binding
/// if it were sent to the surface right now. The "right now"
/// is important because things like trigger sequences are only
/// valid until the next key event.
export fn ghostty_app_key_is_binding(
app: *App,
event: KeyEvent,
) bool {
const core_event = event.keyEvent().core() orelse {
log.warn("error processing key event", .{});
return false;
};
return app.core_app.keyEventIsBinding(app, core_event);
}
/// Notify the app that the keyboard was changed. This causes the
/// keyboard layout to be reloaded from the OS.
export fn ghostty_app_keyboard_changed(v: *App) void {
v.reloadKeymap() catch |err| {
log.err("error reloading keyboard map err={}", .{err});
return;
};
}
/// Open the configuration.
export fn ghostty_app_open_config(v: *App) void {
_ = v.performAction(.app, .open_config, {}) catch |err| {
log.err("error reloading config err={}", .{err});
return;
};
}
/// Update the configuration to the provided config. This will propagate
/// to all surfaces as well.
export fn ghostty_app_update_config(
v: *App,
config: *const Config,
) void {
v.core_app.updateConfig(v, config) catch |err| {
log.err("error updating config err={}", .{err});
return;
};
}
/// Returns true if the app needs to confirm quitting.
export fn ghostty_app_needs_confirm_quit(v: *App) bool {
return v.core_app.needsConfirmQuit();
}
/// Returns true if the app has global keybinds.
export fn ghostty_app_has_global_keybinds(v: *App) bool {
return v.hasGlobalKeybinds();
}
/// Update the color scheme of the app.
export fn ghostty_app_set_color_scheme(v: *App, scheme_raw: c_int) void {
const scheme = std.meta.intToEnum(apprt.ColorScheme, scheme_raw) catch {
log.warn(
"invalid color scheme to ghostty_surface_set_color_scheme value={}",
.{scheme_raw},
);
return;
};
v.core_app.colorSchemeEvent(v, scheme) catch |err| {
log.err("error setting color scheme err={}", .{err});
return;
};
}
/// Returns initial surface options.
export fn ghostty_surface_config_new() apprt.Surface.Options {
return .{};
}
/// Create a new surface as part of an app.
export fn ghostty_surface_new(
app: *App,
opts: *const apprt.Surface.Options,
) ?*Surface {
return surface_new_(app, opts) catch |err| {
log.err("error initializing surface err={}", .{err});
return null;
};
}
fn surface_new_(
app: *App,
opts: *const apprt.Surface.Options,
) !*Surface {
return try app.newSurface(opts.*);
}
export fn ghostty_surface_free(ptr: *Surface) void {
ptr.app.closeSurface(ptr);
}
/// Returns the userdata associated with the surface.
export fn ghostty_surface_userdata(surface: *Surface) ?*anyopaque {
return surface.userdata;
}
/// Returns the app associated with a surface.
export fn ghostty_surface_app(surface: *Surface) *App {
return surface.app;
}
/// Returns the config to use for surfaces that inherit from this one.
export fn ghostty_surface_inherited_config(
surface: *Surface,
source: apprt.surface.NewSurfaceContext,
) Surface.Options {
return surface.newSurfaceOptions(source);
}
/// Update the configuration to the provided config for only this surface.
export fn ghostty_surface_update_config(
surface: *Surface,
config: *const Config,
) void {
surface.core_surface.updateConfig(config) catch |err| {
log.err("error updating config err={}", .{err});
return;
};
}
/// Returns true if the surface needs to confirm quitting.
export fn ghostty_surface_needs_confirm_quit(surface: *Surface) bool {
return surface.core_surface.needsConfirmQuit();
}
/// Returns true if the surface process has exited.
export fn ghostty_surface_process_exited(surface: *Surface) bool {
return surface.core_surface.child_exited;
}
/// Returns true if the surface has a selection.
export fn ghostty_surface_has_selection(surface: *Surface) bool {
return surface.core_surface.hasSelection();
}
/// Same as ghostty_surface_read_text but reads from the user selection,
/// if any.
export fn ghostty_surface_read_selection(
surface: *Surface,
result: *Text,
) bool {
const core_surface = &surface.core_surface;
core_surface.renderer_state.mutex.lock();
defer core_surface.renderer_state.mutex.unlock();
// If we don't have a selection, do nothing.
const core_sel = core_surface.io.terminal.screens.active.selection orelse return false;
// Read the text from the selection.
return readTextLocked(surface, core_sel, result);
}
/// Read some arbitrary text from the surface.
///
/// This is an expensive operation so it shouldn't be called too
/// often. We recommend that callers cache the result and throttle
/// calls to this function.
export fn ghostty_surface_read_text(
surface: *Surface,
sel: Selection,
result: *Text,
) bool {
surface.core_surface.renderer_state.mutex.lock();
defer surface.core_surface.renderer_state.mutex.unlock();
const core_sel = sel.core(
surface.core_surface.renderer_state.terminal.screens.active,
) orelse return false;
return readTextLocked(surface, core_sel, result);
}
fn readTextLocked(
surface: *Surface,
core_sel: terminal.Selection,
result: *Text,
) bool {
const core_surface = &surface.core_surface;
// Get our text directly from the core surface.
const text = core_surface.dumpTextLocked(
global.alloc,
core_sel,
) catch |err| {
log.warn("error reading text err={}", .{err});
return false;
};
const vp: CoreSurface.Text.Viewport = text.viewport orelse .{
.tl_px_x = -1,
.tl_px_y = -1,
.offset_start = 0,
.offset_len = 0,
};
result.* = .{
.tl_px_x = vp.tl_px_x,
.tl_px_y = vp.tl_px_y,
.offset_start = vp.offset_start,
.offset_len = vp.offset_len,
.text = text.text.ptr,
.text_len = text.text.len,
};
return true;
}
export fn ghostty_surface_free_text(ptr: *Text) void {
ptr.deinit();
}
/// Tell the surface that it needs to schedule a render
export fn ghostty_surface_refresh(surface: *Surface) void {
surface.refresh();
}
/// Tell the surface that it needs to schedule a render
/// call as soon as possible (NOW if possible).
export fn ghostty_surface_draw(surface: *Surface) void {
surface.draw();
}
/// Update the size of a surface. This will trigger resize notifications
/// to the pty and the renderer.
export fn ghostty_surface_set_size(surface: *Surface, w: u32, h: u32) void {
surface.updateSize(w, h);
}
/// Return the size information a surface has.
export fn ghostty_surface_size(surface: *Surface) SurfaceSize {
const grid_size = surface.core_surface.size.grid();
return .{
.columns = grid_size.columns,
.rows = grid_size.rows,
.width_px = surface.core_surface.size.screen.width,
.height_px = surface.core_surface.size.screen.height,
.cell_width_px = surface.core_surface.size.cell.width,
.cell_height_px = surface.core_surface.size.cell.height,
};
}
/// Update the color scheme of the surface.
export fn ghostty_surface_set_color_scheme(surface: *Surface, scheme_raw: c_int) void {
const scheme = std.meta.intToEnum(apprt.ColorScheme, scheme_raw) catch {
log.warn(
"invalid color scheme to ghostty_surface_set_color_scheme value={}",
.{scheme_raw},
);
return;
};
surface.colorSchemeCallback(scheme);
}
/// Update the content scale of the surface.
export fn ghostty_surface_set_content_scale(surface: *Surface, x: f64, y: f64) void {
surface.updateContentScale(x, y);
}
/// Update the focused state of a surface.
export fn ghostty_surface_set_focus(surface: *Surface, focused: bool) void {
surface.focusCallback(focused);
}
/// Update the occlusion state of a surface.
export fn ghostty_surface_set_occlusion(surface: *Surface, visible: bool) void {
surface.occlusionCallback(visible);
}
/// Filter the mods if necessary. This handles settings such as
/// `macos-option-as-alt`. The filtered mods should be used for
/// key translation but should NOT be sent back via the `_key`
/// function -- the original mods should be used for that.
export fn ghostty_surface_key_translation_mods(
surface: *Surface,
mods_raw: c_int,
) c_int {
const mods: input.Mods = @bitCast(@as(
input.Mods.Backing,
@truncate(@as(c_uint, @bitCast(mods_raw))),
));
const result = mods.translation(
surface.core_surface.config.macos_option_as_alt orelse
surface.app.keyboardLayout().detectOptionAsAlt(),
);
return @intCast(@as(input.Mods.Backing, @bitCast(result)));
}
/// Send this for raw keypresses (i.e. the keyDown event on macOS).
/// This will handle the keymap translation and send the appropriate
/// key and char events.
export fn ghostty_surface_key(
surface: *Surface,
event: KeyEvent,
) bool {
return surface.app.keyEvent(
.{ .surface = surface },
event.keyEvent(),
) catch |err| {
log.warn("error processing key event err={}", .{err});
return false;
};
}
/// Returns true if the given key event would trigger a binding
/// if it were sent to the surface right now. The "right now"
/// is important because things like trigger sequences are only
/// valid until the next key event.
export fn ghostty_surface_key_is_binding(
surface: *Surface,
event: KeyEvent,
c_flags: ?*input.Binding.Flags.C,
) bool {
const core_event = event.keyEvent().core() orelse {
log.warn("error processing key event", .{});
return false;
};
const flags = surface.core_surface.keyEventIsBinding(
core_event,
) orelse return false;
if (c_flags) |ptr| ptr.* = flags.cval();
return true;
}
/// Send raw text to the terminal. This is treated like a paste
/// so this isn't useful for sending escape sequences. For that,
/// individual key input should be used.
export fn ghostty_surface_text(
surface: *Surface,
ptr: [*]const u8,
len: usize,
) void {
surface.textCallback(ptr[0..len]);
}
/// Set the preedit text for the surface. This is used for IME
/// composition. If the length is 0, then the preedit text is cleared.
export fn ghostty_surface_preedit(
surface: *Surface,
ptr: [*]const u8,
len: usize,
) void {
surface.preeditCallback(if (len == 0) null else ptr[0..len]);
}
/// Returns true if the surface currently has mouse capturing
/// enabled.
export fn ghostty_surface_mouse_captured(surface: *Surface) bool {
return surface.core_surface.mouseCaptured();
}
/// Tell the surface that it needs to schedule a render
export fn ghostty_surface_mouse_button(
surface: *Surface,
action: input.MouseButtonState,
button: input.MouseButton,
mods: c_int,
) bool {
return surface.mouseButtonCallback(
action,
button,
@bitCast(@as(
input.Mods.Backing,
@truncate(@as(c_uint, @bitCast(mods))),
)),
);
}
/// Update the mouse position within the view.
export fn ghostty_surface_mouse_pos(
surface: *Surface,
x: f64,
y: f64,
mods: c_int,
) void {
surface.cursorPosCallback(
x,
y,
@bitCast(@as(
input.Mods.Backing,
@truncate(@as(c_uint, @bitCast(mods))),
)),
);
}
export fn ghostty_surface_mouse_scroll(
surface: *Surface,
x: f64,
y: f64,
scroll_mods: c_int,
) void {
surface.scrollCallback(
x,
y,
@bitCast(@as(u8, @truncate(@as(c_uint, @bitCast(scroll_mods))))),
);
}
export fn ghostty_surface_mouse_pressure(
surface: *Surface,
stage_raw: u32,
pressure: f64,
) void {
const stage = std.meta.intToEnum(
input.MousePressureStage,
stage_raw,
) catch {
log.warn(
"invalid mouse pressure stage value={}",
.{stage_raw},
);
return;
};
surface.mousePressureCallback(stage, pressure);
}
export fn ghostty_surface_ime_point(
surface: *Surface,
x: *f64,
y: *f64,
width: *f64,
height: *f64,
) void {
const pos = surface.core_surface.imePoint();
x.* = pos.x;
y.* = pos.y;
width.* = pos.width;
height.* = pos.height;
}
/// Request that the surface become closed. This will go through the
/// normal trigger process that a close surface input binding would.
export fn ghostty_surface_request_close(ptr: *Surface) void {
ptr.core_surface.close();
}
/// Request that the surface split in the given direction.
export fn ghostty_surface_split(ptr: *Surface, direction: apprt.action.SplitDirection) void {
_ = ptr.app.performAction(
.{ .surface = &ptr.core_surface },
.new_split,
direction,
) catch |err| {
log.err("error creating new split err={}", .{err});
return;
};
}
/// Focus on the next split (if any).
export fn ghostty_surface_split_focus(
ptr: *Surface,
direction: apprt.action.GotoSplit,
) void {
_ = ptr.app.performAction(
.{ .surface = &ptr.core_surface },
.goto_split,
direction,
) catch |err| {
log.err("error creating new split err={}", .{err});
return;
};
}
/// Resize the current split by moving the split divider in the given
/// direction. `direction` specifies which direction the split divider will
/// move relative to the focused split. `amount` is a fractional value
/// between 0 and 1 that specifies by how much the divider will move.
export fn ghostty_surface_split_resize(
ptr: *Surface,
direction: apprt.action.ResizeSplit.Direction,
amount: u16,
) void {
_ = ptr.app.performAction(
.{ .surface = &ptr.core_surface },
.resize_split,
.{ .direction = direction, .amount = amount },
) catch |err| {
log.err("error resizing split err={}", .{err});
return;
};
}
/// Equalize the size of all splits in the current window.
export fn ghostty_surface_split_equalize(ptr: *Surface) void {
_ = ptr.app.performAction(
.{ .surface = &ptr.core_surface },
.equalize_splits,
{},
) catch |err| {
log.err("error equalizing splits err={}", .{err});
return;
};
}
/// Invoke an action on the surface.
export fn ghostty_surface_binding_action(
ptr: *Surface,
action_ptr: [*]const u8,
action_len: usize,
) bool {
const action_str = action_ptr[0..action_len];
const action = input.Binding.Action.parse(action_str) catch |err| {
log.err("error parsing binding action action={s} err={}", .{ action_str, err });
return false;
};
return ptr.core_surface.performBindingAction(action) catch |err| {
log.err("error performing binding action action={f} err={}", .{ action, err });
return false;
};
}
/// Complete a clipboard read request started via the read callback.
/// This can only be called once for a given request. Once it is called
/// with a request the request pointer will be invalidated.
export fn ghostty_surface_complete_clipboard_request(
ptr: *Surface,
str: [*:0]const u8,
state: *apprt.ClipboardRequest,
confirmed: bool,
) void {
ptr.completeClipboardRequest(
std.mem.sliceTo(str, 0),
state,
confirmed,
);
}
export fn ghostty_surface_inspector(ptr: *Surface) ?*Inspector {
return ptr.initInspector() catch |err| {
log.err("error initializing inspector err={}", .{err});
return null;
};
}
export fn ghostty_inspector_free(ptr: *Surface) void {
ptr.freeInspector();
}
export fn ghostty_inspector_set_size(ptr: *Inspector, w: u32, h: u32) void {
ptr.updateSize(w, h);
}
export fn ghostty_inspector_set_content_scale(ptr: *Inspector, x: f64, y: f64) void {
ptr.updateContentScale(x, y);
}
export fn ghostty_inspector_mouse_button(
ptr: *Inspector,
action: input.MouseButtonState,
button: input.MouseButton,
mods: c_int,
) void {
ptr.mouseButtonCallback(
action,
button,
@bitCast(@as(
input.Mods.Backing,
@truncate(@as(c_uint, @bitCast(mods))),
)),
);
}
export fn ghostty_inspector_mouse_pos(ptr: *Inspector, x: f64, y: f64) void {
ptr.cursorPosCallback(x, y);
}
export fn ghostty_inspector_mouse_scroll(
ptr: *Inspector,
x: f64,
y: f64,
scroll_mods: c_int,
) void {
ptr.scrollCallback(
x,
y,
@bitCast(@as(u8, @truncate(@as(c_uint, @bitCast(scroll_mods))))),
);
}
export fn ghostty_inspector_key(
ptr: *Inspector,
action: input.Action,
key: input.Key,
c_mods: c_int,
) void {
ptr.keyCallback(
action,
key,
@bitCast(@as(
input.Mods.Backing,
@truncate(@as(c_uint, @bitCast(c_mods))),
)),
) catch |err| {
log.err("error processing key event err={}", .{err});
return;
};
}
export fn ghostty_inspector_text(
ptr: *Inspector,
str: [*:0]const u8,
) void {
ptr.textCallback(std.mem.sliceTo(str, 0));
}
export fn ghostty_inspector_set_focus(ptr: *Inspector, focused: bool) void {
ptr.focusCallback(focused);
}
/// Sets the window background blur on macOS to the desired value.
/// I do this in Zig as an extern function because I don't know how to
/// call these functions in Swift.
///
/// This uses an undocumented, non-public API because this is what
/// every terminal appears to use, including Terminal.app.
export fn ghostty_set_window_background_blur(
app: *App,
window: *anyopaque,
) void {
// This is only supported on macOS
if (comptime builtin.target.os.tag != .macos) return;
const config = &app.config;
// Do nothing if we don't have background transparency enabled
if (config.@"background-opacity" >= 1.0) return;
const nswindow = objc.Object.fromId(window);
_ = CGSSetWindowBackgroundBlurRadius(
CGSDefaultConnectionForThread(),
nswindow.msgSend(usize, objc.sel("windowNumber"), .{}),
@intCast(config.@"background-blur".cval()),
);
}
/// See ghostty_set_window_background_blur
extern "c" fn CGSSetWindowBackgroundBlurRadius(*anyopaque, usize, c_int) i32;
extern "c" fn CGSDefaultConnectionForThread() *anyopaque;
// Darwin-only C APIs.
const Darwin = struct {
export fn ghostty_surface_set_display_id(ptr: *Surface, display_id: u32) void {
const surface = &ptr.core_surface;
_ = surface.renderer_thread.mailbox.push(
.{ .macos_display_id = display_id },
.{ .forever = {} },
);
surface.renderer_thread.wakeup.notify() catch {};
}
/// This returns a CTFontRef that should be used for quicklook
/// highlighted text. This is always the primary font in use
/// regardless of the selected text. If coretext is not in use
/// then this will return nothing.
export fn ghostty_surface_quicklook_font(ptr: *Surface) ?*anyopaque {
// For non-CoreText we just return null.
if (comptime font.options.backend != .coretext) {
return null;
}
// We'll need content scale so fail early if we can't get it.
const content_scale = ptr.getContentScale() catch return null;
// Get the shared font grid. We acquire a read lock to
// read the font face. It should not be deferred since
// we're loading the primary face.
const grid = ptr.core_surface.renderer.font_grid;
grid.lock.lockShared();
defer grid.lock.unlockShared();
const collection = &grid.resolver.collection;
const face = collection.getFace(.{}) catch return null;
// We need to unscale the content scale. We apply the
// content scale to our font stack because we are rendering
// at 1x but callers of this should be using scaled or apply
// scale themselves.
const size: f32 = size: {
const num = face.font.copyAttribute(.size) orelse
break :size 12;
defer num.release();
var v: f32 = 12;
_ = num.getValue(.float, &v);
break :size v;
};
const copy = face.font.copyWithAttributes(
size / content_scale.y,
null,
null,
) catch return null;
return copy;
}
/// This returns the selected word for quicklook. This will populate
/// the buffer with the word under the cursor and the selection
/// info so that quicklook can be rendered.
///
/// This does not modify the selection active on the surface (if any).
export fn ghostty_surface_quicklook_word(
ptr: *Surface,
result: *Text,
) bool {
const surface = &ptr.core_surface;
surface.renderer_state.mutex.lock();
defer surface.renderer_state.mutex.unlock();
// Get our word selection
const sel = sel: {
const screen: *terminal.Screen = surface.renderer_state.terminal.screens.active;
const pos = try ptr.getCursorPos();
const pt_viewport = surface.posToViewport(pos.x, pos.y);
const pin = screen.pages.pin(.{
.viewport = .{
.x = pt_viewport.x,
.y = pt_viewport.y,
},
}) orelse {
if (comptime std.debug.runtime_safety) unreachable;
return false;
};
break :sel surface.io.terminal.screens.active.selectWord(
pin,
surface.config.selection_word_chars,
) orelse return false;
};
// Read the selection
return readTextLocked(ptr, sel, result);
}
export fn ghostty_inspector_metal_init(ptr: *Inspector, device: objc.c.id) bool {
return ptr.initMetal(.fromId(device));
}
export fn ghostty_inspector_metal_render(
ptr: *Inspector,
command_buffer: objc.c.id,
descriptor: objc.c.id,
) void {
return ptr.renderMetal(
.fromId(command_buffer),
.fromId(descriptor),
) catch |err| {
log.err("error rendering inspector err={}", .{err});
return;
};
}
export fn ghostty_inspector_metal_shutdown(ptr: *Inspector) void {
if (ptr.backend) |v| {
v.deinit();
ptr.backend = null;
}
}
};
};